Removing materials.fbs from Android make file
Removing materials.fbs from Android make file

The materials schema was removed, so the Android make file should
not be trying to build it.

Change-Id: Ifd0a5a3239c86786ae6b5c5abc1cfc296c9e1a2a

google/zooshi,google/zooshi,google/zooshi,google/zooshi,google/zooshi